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Re: Rebuilding an A65 oil pump [Re: Mark Parker] #791519 11/28/19 3:45 am
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At 5000 RPM the pistons are at+/-20 degrees of BDC for 1.3 msec. Hardly worth the mechanical valving or electronics compared to just routing the OPRV waste to the oil jets.
Porsche made a piston oiler consisting of small tube that slipped inside a hole in the piston pin boss for the lower half of the stroke. During the upper half of the stroke it squirted the bottom of the crown.
On the triple I want to try rerouting the tappet feeds to tee bars with jets under the pistons and a pressure valve that only opens at high pressure.
Most (I think) Japanese MC engines have pressure fed main and countershaft gearboxes instead of the BSA/TRIUMPH hole between the gear teeth and hope the oil does not get flung off before the teeth mesh system.

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Re: Rebuilding an A65 oil pump [Re: Mark Parker] #791522 11/28/19 5:23 am
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NickL Offline
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Just have the rods drilled, it's an option if you buy corrillo's

Re: Rebuilding an A65 oil pump [Re: Mark Parker] #791533 11/28/19 10:41 am
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Mark Parker Offline OP
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Honda used two groves per side on their Moto GP rods, MAP rods have just the one. This is a better idea than drilling, especially for alloy rods.

If you want to see how BSA drilled 1970 alloy rods I could take a photo of a cutaway rod, its not actually cut away it broke through the drillings and split the rod all the way up to just beneath the pin, and that's how I found it when I first stripped the Lightning back in the 70s, still hanging on with half the rod cracked away, I guess it had a bolt in both bits.

I don't know if I did grooves in the rods on my thing or planned it for the next time its apart.

[Linked Image from i.postimg.cc]


mark
Re: Rebuilding an A65 oil pump [Re: Mark Parker] #791534 11/28/19 11:03 am
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The drilling on the corrillo's goes up the centre of the rod to the small end
not like the bsa drilling which was used on the timing side only. That was
a carry over from earlier designs. The late steel capped beezer rods did not have that.
The notches cut in those rods is a good way to achieve a similar thing.
Corrillo's are steel so the centre drilling does not remove any where near as much
strength as with a forged alloy type. I trust corrillo's, they are bloody good.

I had a set of norton rods that split down from the small end probably were
cooked at some stage and cleaned up before i owned them, luckily didn't do
any real damage as i remember.

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